小吆三打哈 is a popular card game that originated in Hunan and has gradually spread across the country. It is also known as "三打一" (Three Beats One) and "二七王" (Two Sevens and Kings) in some regions. The game is played with two decks of cards, excluding the 3s and 4s, and the main cards are always the 2s, 7s, and Kings. With 8 bottom cards, the game tests players' skills and teamwork.

The game offers multiple benefits, including daily login rewards in the form of sign-in gift packs. The gameplay itself adds excitement by not shuffling the cards, making it reminiscent of the popular card game Tractor. Players can engage in multiplayer battles, challenging skilled opponents from all over the world. The variety of gameplay modes, such as the non-shuffling gameplay, the "去6" mode, and the "二七王" mode, ensure a unique and diverse gaming experience. The game also features stunning special effects, making actions like calling the trump suit, digging the bottom cards, and playing Tractor visually appealing.